, :
1. AgNO3 + FeCl3
2. Na2S + HCl
3. HCN + KOH
4. Zn(OH)2 + NaOH
.
, . , . :
,
,
,
.
, - , , .
, .
:
1. 3AgNO3 + FeCl3 = 3AgCl¯ + Fe(NO3)3.
:
3Ag+ + 3NO + Fe3+ + 3Cl- = 3AgCl¯ + 3Fe3+ + 3NO .
, , .
:
3Ag+ + 3Cl- = 3AgCl¯.
.
2. Na2S + 2HCl =2NaCl + H2S.
2Na+ + S2 + 2H+ + 2Cl =2Na+ + 2Cl + H2S.
2H+ + S2 = H2S.
3. HCN + KOH = KCN + H2O.
HCN + K+ + OH- = K+ + CN- + H2O.
HCN + OH- = CN- + H2O.
4. Zn(OH)2¯ + 2NaOH = Na2[Zn(OH)4].
Zn(OH)2¯ + 2Na+ + 2OH- = 2Na+ + [Zn(OH)4]2-.
Zn(OH)2¯ + 2OH- = [Zn(OH)4]2-.